Go to momster to sign up to receive a free Momster.com T-shirt (Retail value: $20.00). Must be a U.S. resident, 18 years or older. Limit one T-shirt per household. Allow 6-8 weeks for delivery. Offer begins December 8, 2009 and ends December 29, 2009, or when 100 requests have been received, whichever comes first. If more than 100 requests are received, orders will be fulfilled in the order received.

http://momster.com/comingsoon/view.castle

The online form is working now but Family Circle January 2010 magazine states it starts on 12/8/09.